//
//  CZNewFeatureCell.swift
//  05.08--weibo
//
//  Created by fennyYang on 16/5/17.
//  Copyright © 2016年 a. All rights reserved.
//

import UIKit

class CZNewFeatureCell: UICollectionViewCell
{
     // 根据cell显示的哪一页设置对应的图片
     var index: Int = 0
     {
          didSet
          {
               // cell要显示的那一刻，collectionView就会来给cell设置index，让我们的cell知道要显示哪一页
               // 根据页码设置图片
               CZPrint(items: "第\(index)页要显示")

               bkgImageView.image = UIImage(named: "new_feature_\(index + 1)")

               // 隐藏开始按钮
               startButton.hidden = true
          }
     }

     required init?(coder aDecoder: NSCoder)
     {
          fatalError("init(coder:) has not been implemented")
     }

     override init(frame: CGRect)
     {
          super.init(frame: frame)

          prepareUI()
     }

     private func prepareUI()
     {
          // 1.添加控件
          contentView.addSubview(bkgImageView)
          contentView.addSubview(startButton)

          // 2.添加约束
          bkgImageView.snp_makeConstraints
               { (make) -> Void in

                    make.edges.equalTo(self.contentView)
               }

          startButton.snp_makeConstraints
               { (make) -> Void in

                    make.centerX.equalTo(self.contentView)
                    make.bottom.equalTo(self.contentView).offset(-160)
               }

     }


     // 开始按钮动画
     func startAnimation()
     {
          // 动画之前，将按钮显示出来
          startButton.hidden = false

          //在动画前设置transform.scale为0，看不到
          startButton.transform = CGAffineTransformMakeScale(0, 0)

          UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 0.5, initialSpringVelocity: 5, options: UIViewAnimationOptions(rawValue: 0), animations: { () -> Void in

                   // 恢复到原来的大小
                    self.startButton.transform = CGAffineTransformMakeScale(1, 1)  //清空transform到默认的状态 scale = 1

               }, completion: nil)
     }


     // MARK: - 按钮点击事件
     func startButtonDidClick()
     {
          // 切换到CZMainTabBarController
          let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate

          appDelegate.switchRootViewController(CZMainTabBarController())
     }



     // MAKR:- 懒加载
     // 背景imageView
     private lazy var bkgImageView: UIImageView = UIImageView(image: UIImage(named: "new_feature_1"))

     //开始按钮
     private lazy var startButton: UIButton =
     {
          let button = UIButton()

          //设置文字
          button.setTitle("开始体验", forState: UIControlState.Normal)

          button.setTitleColor(UIColor.whiteColor(), forState:UIControlState.Normal)

          button.setBackgroundImage(UIImage(named: "new_feature_finish_button"), forState: UIControlState.Normal)

          button.setBackgroundImage(UIImage(named: "new_feature_finish_button_highlighted"), forState: UIControlState.Highlighted)

          button.hidden = true

          // 点击事件
          button.addTarget(self, action: "startButtonDidClick", forControlEvents: UIControlEvents.TouchUpInside)

          return button

     }()
}








































